The following codes are now obsolete but may still be heard on the radio:

K2 Event held until later (replaced by the term “pre-empt”)
K4 Warning given (now included in K6)
K5 Police form 258 or 101 submitted (now included in K6)
K7 Job left for expert (code no longer used)
K8 Job left for prime unit (code no longer used)

STATUS CODES:

10-0 Off duty
10-1 Broadcast to all units
10-2 En-route to job
10-3 Available
10-4 Repeat your last message
10-5 Out of service for a short time (now obsolete)
10-6 Change channel….
10-7 Arrived at job
10-8 Busy but available
10-9 Urgent Message
10-10 Officer requires immediate assistance

Callsigns of units operating under CAD control are made up as follows:
Two letters indicating the unit home station (eg AK Auckland Central, TN Takapuna, WN Wellington Central etc)
A letter indicating the unit type One or two digits to indicate the specific unit identity.
eg AKX3 is an Auckland Central CIB (Detective) unit
SVH13 is an Auckland Motorways Traffic unit
Unit type codes (third letter) are as follows: